The question is, what can I put in the 10 gallon with either Jingles or Sir Bubbles?

I was thinking to have in the tank:
4 cories (don't know which yet)
Some cloud minnows or Neon Tetras
Another oto cat to go with Lucky (a female, not a male)
Jingles/Sir Bubbles
Lucky (my oto now)

I also have the option of dividing it a few times and getting more male bettas, but I don't know how I feel about that...

Anything I should/shouldn't do? I'm planning on putting a decent amount of plants in there as well.

I'm also planning on doing a tank cycle with fish in it. I did it for the 5 gallon, and it went over well. I currentlly have 2 bettas and an oto in there and the ammonia levels are amazingly low as well, thankfully.

why not divide the 10 gallon into 3rds and keep your 5 and 3 gallon and keep the 1.5 as a hospital tank? and not get any tank mate because the aggressiveness of a betta, you may just waste you $$ anyways...

I'm only keeping the 1.5 because Pudge is in it :)
He's been undergoing some medicine treatments for about a month and a half now, and I noticed the bigger the tank, the worse he is. Otherwise I would be keeping the 3 gallon :)

Not sure if what i did is right but i have a male with a cory in a 5 gallon and they do just fine. been like that for a year and nothing has ever happened you could easily do 2-3 cories im guessing in a ten with a male. I have had 6 girls in a ten gallon before.